Jarring-machine.



LLUCAS L G. scHLl-FFKA,

mami; MACHINE. APPLICATlON FILED APR. 9. |911.

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L LUCAS & G. SCHLIFFKA.

JARRlNG MACHINE.

APPLICATION FILED APR. s. |917.

Patented July 17, 1917 2 SHEETS-SHEET 2 nahe INVENT M- which are as follows UNITED sTATEs PATENT OFFICE.

Bpeoliloatian ot Letten Patent.

Patented July 17, 1917 Application led April B, 1917. Scrlal No. 160.805.

To all whom t may concern.'

Be it known that we JOHN LUoAs and GUsTAv Scams, residents of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Im rovement .in Jarring-Machines, of whcht e following isa specification.

-The invention relates to jarring machines.

It is highly desirable in'foundry practice to have some kind of a machine 'by means of which the 'molds may be jarred to settle the sand about the patterns.. Various types of machines have been proposed, all of which are rather complicated, occupyconsiderable space and each of which must have a separate mechanism for furnishing 'the power to jar the molds which in many cases is quite heavy. The present invention has been devised to avoid the difliculties and expense of having 'a large number of complicated and bulky jarring machines.

The general object of the invention is to provide'an improved jarring machine which may be operated by simply attaching to it the hook of;a traveling" crane, such as is usually present in a foundry.

Another object is to provide an improved .jarringI machine which is simple, compact,

1nexpensive`ang easily operated.

A further o ject is to provide a jarring machine with an improved attachment by means of whichjthe sand may be jarred out, of the molds. f Other objects and advantages of the invention will appear from the following specification.

An embodiment of the invention is shown in the following drawings, the views of 'Figure 1 is a diagrammatic view showing e thee-jarring machine as it is operated by the traveling crane for jarring the sand about the pattern, and, also, for jarring-the sand out of the mold.

Fig. .2 is a cross section through the jurring machine.

Fig. 3 is a cross section at right angles Fig. 2.

Fig. 5 is a detail section lthrough the lratchet mechanism.

Fig. 6 is a side elevation, showing the at tacbment for jarring the machine, in see-- tlon.

Fig. 7 is an end elevation.' showing the to a floor, a reciprocable jarring` table 2 and mechanism arranged to be operated by the traveling crane 3' for jarring the table.

The frame 1 may be of any suitable shape and made of anyI suitable material. Preferably, it is made of metal, and is rectangu lar in shape, being constructed in two parts 4 and 5 which are bolted, or otherwise fastened together, when thc machine is assembled. The lower half 4 is fastened to the floor of a foundry by bolts 6, or by any other suitable means. The upper half carries abearing sleeve 7 supported by ribs 8 which extend from the side Walls of the frame to the sleeve. This sleeve is per fectly cylindrical in shape and arranged to receive the post or pedestal 9 of the reciprocable table2. VThe sleeve and pedestal have complementary recesses 10, in which a key -wardly projecting rib on the upper ,half Aof the frame and ribs 16 extend between the end walls of the lower half of the frame. The free end of the lever is provided with a cam surface 17 which is arranged'to be engaged by the cam surfaces of a two-armed cam 18 carried by shaft 19 that is journaled in the lower half 4 of the frame. Whenever the shaft 19 is rotated the cam-18 engages the surface 17 of the lever 13 and moves it.upwardly to raise the table. As the cam 18- passes beyond the vsurface 17 it permits the lever and the table with the mold on top of 1t tosuiidenij-,f dreiip against "mesmo T T e ends of 'theshaft l19 project beyond 'are used is as follows.- the sides ofthe frame andcn eachend'there Tables are Vpositioned atcoii'venient points is mounted a ratchet drum 20. These drumsaround "the i theframe ofthemachine, therebyl siidde'nly shit-y'actng over .short distantel S .l1ghly -.jarring the mold and settlingthesandabout desirable.,

" the attorn. 'l he manner which* these jarringtablesA ouudry and,. as will bfe job-f are loosely' iournaled. on'the shaft and" each ecimed, arc'of/a vconvenient height so that 22 into enga-gement with the ratchet wheel a in'old may-be easilyplaced on top ofrth'e jarring table' 2. 23 which is fixedrigidly to the'shaih Aclaid on Athejarriug table, org ou -a' card laid cordingl-y when the drums are rotated in thereon, a fiask is their put around "the patcarries a dog or tooth '21 biased'by a spring lin practice a attern 4'is I vone direction 'thc shaft1'19 is turned but. tern-aud sand is -shoigeiecl' into the-flask,

24 and25, said cables beingpreferably a't lever to 4jar the table The cables .are tachedto the drumA at one point. One end' preferably. i'nade `ot such length'. that 'a of each of the cables 'carries a ring or hook single inoi'eiric'nt of thein upwardly rotates l' 26" by means of which v'it may-bc attachedthe shaft a suiiicient numberv of tiinesxto other end of each ofthecables is attached about the drum 'h'end 0f the Cable WhCh the eights T autoiiiatical y wind them 'the ratchet iyheel A23 'erated by simply attaching ;tl,ie' crane vhook ,fu'nd desirable.' It is valso to'bennde'rstpod whentliey are rotated in the other direction "'Tlie'crane hook is then' attached to the ends the tooth 21 simply rides over the teeth on. of thefcables Vand the hook raised to pull `withoiit rotating the --cables u-pwardly., -This 'rotatesthe .'ratcliet drums and causesth'c 'ends of the cani' '1S to 'successively engage. the p ivotcd shaft'19. l -v Wound 'about each of the drums' are'cables tolaheliookor the travelingl crane andthe properly jar the mold, thougln-,of course,

to a weight-2 7 :which serves tonormally Ijol crane-hook may he lowereda'nd raised again. tate-.the drum after the. cable has been disL When thc operation is i completed' the if thc mold is not sufliciiitly j ari'ed. the

so 'ss connected "from the crane so as to wind :cables are uuhooked from he crimes and is arranged to heattached'to the crane in almut'tlie drains-so that -the machine is order'that the mechanism will be ant'omatiiiiiine latel aud. automatically placed in cally maintainedina condition tbe '0p`"condition for another operation. In the The WightS 27 crane to Ithe succeeding table and that aDY Qt-hl Suitable malfls. may' be Sed is not only gxpe'nsiveibut requires considfor returning the. drains to their'normaleiable space at eachin arhine.V Ilhe simple.

The ratchetdruns 2 0 .B1B hOUSed' ill-09S" and?boiiserluently-quite a number (rf these ings 30 which are attached to the' vframe of mm-mms my be placed bout foundry the machlnc and Whlcb SQ 6 t0. Protect th? -in all convenient positions for thel molding.

meantime. `the# crane operator moves the' .lars that drums and prevent dil'tginng CCBSS @0 They may thenV he quickly and easily operthe-m T he Cables 24 hd 25- PSS through ated h v simply ruiming the traveling-crane' onto the suitable lopenings in' these hoi'lsin i over lto their loca-'tioniv hooking upwardly.

The lhafhlh herein' illustrate S- T0 cable. and givingthe cablelapl vded'with a; drum on each en d of the s aft the crane by means, of a spre der 32. This rovided. i e balances the pull on the machine and is'the f Inorder to 'jar the sand out of a mold the 19 and two Vcables which are connected t0 attachment shown in Figs. 6'and Ilias been -115` f'l`hisl attachment is arranged to s et onf.

l pref'era'ble .'constrction, though it may lietop of thc jarring table Q afnd for this-,pur-A variedin lany con'yeriie'nt wayl It will be observedthxrt'with the con#1 uprights and 37, each of .which h ii a. Stlctn above described, thi? llfflhg QICG series of Vnotches 38' therein orniiiigst'eps of the crane or otherdeyice which 1s attable'with'increascd intensity', owing-to the upri rhts to'ilirect'the sand from the-center leverage thatis secured. Theextent of this of'tie attachment togthe sides o the jarleveragemay beval-.ieri if necessary. It 1s ring 'machine' For this purpose. itis-'sla )ed pose ithas n flanged'basei135Y carrying twol or shoulders for receiving a inold" 39.` hwhefl tothe Cubic. iSPPhd t0 thi Jl'llflg trough or chute- 40 is positioned about the' v las particularly ajdvmitageous'-fcr the reason, in both' directions fiaimthecentcr" a he that somo of the molds vtoub'e ja'rred are attachnici-it is used by simply placing it on' exceedingly heavy andl consequently any th'e jarring table,- putting theiiiold' iii the i mechanism whiehconvcrtsthc pulling force attachment, hooking' the crane onto the of thccrane into a force of increased intcncable ofthe-machine and pulling upwardly.

)A cam mechanisim being arranged to afnp'ly the. crane vi'ith increaised intensity" tbelifting 10 lifting force of the cra-ne with :L leverage on tale.

the lifting table. n testimony whereof, have hereunto'sei'.- 15. The combination -with :t traveling my hand.

` crane 015,11v jarrinor machine. comprising a, i v

' frnmii, :1. movable tble carried thereby, and f V AIQULISTI'LIFIA menus adapted lto be actuated by the crane for jarring said table, said-means being ar- Witness:v

ranged to 'apply the lifting force of the GLENN H. LERESCHE. i f- Y 

